In the fileworkplacestress.xlsx, the data for the perceived level of stress of 30 employees and each employee's number of absences in a 120-day period are shown.

1. Write the null and alternate hypotheses for the test you suggest conducting to test for significance of difference between the three levels of stress.
2. Conduct a two-way ANOVA test on the data in the file. Interpret your findings.
3. Discuss the two kinds of variance here, and indicate how they are compared to conclude a significant difference.

FILE:

workplacestress.xlsx